@@ExoticCarspotters Thank you for your answer! I've seen two Dutch common M4s with these midpipes so I assume it's road legal if the valves are closed?
@@ExoticCarspotters I would change the mid pipes to the resonated version and leave everything stock. I contacted Pure Turbos Belgium and they replied that the mid pipes don't come with any official EU approval document. But I suppose it's still road legal if this M4 can have it.